WO2020125037A1

WO2020125037A1 - Hot air circulating oven

Info

Publication number: WO2020125037A1
Application number: PCT/CN2019/100953
Authority: WO
Inventors: 童朝兵
Original assignee: 南京淮腾机械科技有限公司
Priority date: 2018-12-20
Filing date: 2019-08-16
Publication date: 2020-06-25
Also published as: CN109442896A

Abstract

Disclosed is a hot air circulating oven, comprising an oven body (1), air delivery ducts arranged on two sides of the oven body (1), and a layered baking rack arranged inside the oven body (1), wherein the top of the oven body (1) is provided with a fan (2), an air duct of the fan (2) is designed to be R-shaped, a tail portion of the R-shaped air duct (3) is in communication with air delivery ducts (4) of side walls of the oven body (1), a head portion of the R-shaped air duct (3) is arranged at a central position of the top of the oven body (1), and the fan (2) is arranged at the head portion of the R-shaped air duct (3) and is in communication with the interior of the oven body (1). The oven can prevent the operation of an electric motor from being affected due to a high temperature, and also does not need water to perform cooling, and is thus convenient and energy-saving; and the air duct of the fan (2) is R-shaped, so that the air intake quantity is improved, and the air intake uniformity is ensured.

Description

Hot air circulation oven

Technical field

The invention relates to an oven, and more particularly to a hot air circulation oven, which belongs to the technical field of pharmaceutical equipment.

Background technique

In the production process of medicines, some raw materials in medicines are usually dried. At present, hot air circulating air boxes are often used. The wind source is driven by a circulating air motor to drive the wind wheel through the heater, and the hot air is sent out, and then through the air duct. Go to the inner chamber of the oven, and then suck the used air into the air duct to become the air source to recirculate and heat it. Commonly used hot air circulation oven fans are on both sides of the cabinet, and the heating of the inner chamber is very uneven. At the same time, because of the heating pipes arranged on both sides, in the case of high temperature oven, it is necessary to connect the water pipe to cool the motor. It is inconvenient to waste energy.

Summary of the invention

Object of the invention: The purpose of the invention is to provide a hot air circulation oven with uniform heating, energy saving and convenient use in view of the shortcomings of the prior art.

Technical solution: The hot air circulation oven of the present invention includes a box body, air outlet channels provided on both sides of the box body, and a tiered drying rack provided inside the box body. A fan is provided on the top of the box body. The air duct of the fan has an R-shaped design, the tail of the R-shaped air duct communicates with the air outlet duct of the side wall of the box, and the head of the R-shaped air duct is arranged at the center of the top of the box Position, the fan is installed at the head of the R-shaped air duct and communicates with the inside of the box.

The technical solution of the present application is further defined as that the fan is a long-axis axial fan.

Further, a heat insulation layer is provided between the R-shaped air duct and the top of the box.

Further, an air inlet channel is also connected to the rear air inlet of the R-shaped air duct.

Further, heating pipes are provided in the air outlet ducts on both sides of the box body.

Further, a humidity exhaust fan is also provided at the top of the box, and the air inlet of the humidity exhaust fan communicates with the inner cavity of the box.

Beneficial effect: The present invention provides a hot air circulation oven, the fan is placed on the top, and a long-axis axial fan is used, with a heat insulation layer in the middle, to avoid high temperature affecting the operation of the motor, and does not require water cooling, which is convenient and energy-saving; fan The air duct of R adopts R type, which increases the air volume of the air inlet and ensures the uniformity of the air inlet. At the same time, the air inlet channel is significantly larger than the air outlet channel, and the air pressure is increased to make the air outlet speed faster and the airflow enters the box. When the body is pressed from top to bottom, the force is large, making the drying more uniform.

BRIEF DESCRIPTION

FIG. 1 is an overall structural diagram of a hot air circulation oven provided by the present invention;

2 is a perspective view of the structure of the hot air circulation oven provided by the present invention;

3 is a schematic structural view of an R-shaped air duct provided by the present invention.

detailed description

The technical solutions of the present invention will be described in detail below through the drawings, but the protection scope of the present invention is not limited to the embodiments.

Embodiment 1: A hot air circulation oven, as shown in FIGS. 1 and 2, includes a box body 1, air outlet ducts provided on both sides of the box body 1, and a tiered drying rack provided inside the box body 1. Heating pipes are arranged in the air outlet ducts on both sides of the box body 1.

In this embodiment, a fan 2 is provided on the top of the cabinet 1, and the fan 2 is a long-axis axial fan. The axial fan is usually applied in a place where ventilation is performed. In this embodiment, a long-axis axial flow is used. The fan is designed to increase the distance between the fan and the heating pipe by lengthening the rotating shaft of the fan, so as to prevent the temperature from affecting the work of the fan.

The air duct of the fan 2 is of an R-shaped design, the tail of the R-shaped air duct 3 communicates with the air-outlet air duct 4 of the side wall of the box body 1, and the head of the R-shaped air duct is disposed on the In a central position on the top of the cabinet 1, the fan 2 is installed at the head of the R-shaped air duct 3 and communicates with the inside of the cabinet 1. The design of the R-shaped air duct increases the air intake and ensures the uniformity of the air intake. At the same time, the air inlet channel is significantly larger than the air outlet channel, and the air pressure is increased to make the air outlet speed faster. The up-down impact is large, making the drying more uniform.

In addition, there will be air loss during the circulation of the fan 2. In order to ensure the sufficiency of the hot air, the rear air inlet of the R-shaped air duct 3 of the present application is also connected with a supplemental air channel 6, and the supplemental air is opened when necessary.

A heat insulation layer is provided between the R-shaped air duct 3 and the top of the box body 1, which further reduces the influence of high temperature on the motor. In a high-temperature environment, no further water cooling is required, which is convenient and energy-saving.

The top of the cabinet 1 is also provided with a moisture exhaust fan 7. The air inlet of the moisture exhaust fan 7 communicates with the inner cavity of the cabinet 1. After the circulation oven runs for a period of time, when the humidity inside the cabinet is high, it starts The moisture exhaust fan 7 exhausts the air with high humidity.

As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes can be made in form and detail without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

A hot air circulation oven includes a box body (1), air outlet channels provided on both sides of the box body (1), and a tiered drying rack provided inside the box body (1), characterized in that the box body (1 1) A fan (2) is arranged on the top of the fan, and the air duct of the fan (2) is of an R-shaped design, and the tail air of the R-shaped air duct (3) and the side wall of the box (1) The duct (4) is connected, the head of the R-shaped air duct is set at the center of the top of the box (1), and the fan (2) is set at the head of the R-shaped duct (3), And communicate with the inside of the box (1).
A hot air circulation oven according to claim 1, characterized in that the fan (2) is a long-axis axial fan.
The hot air circulation oven according to claim 1, characterized in that a heat insulation layer is provided between the R-shaped air duct (3) and the top of the box body (1).
The hot air circulation oven according to claim 1, characterized in that a tail air inlet of the R-shaped air duct (3) is further connected with a supplemental air duct (6).
A hot air circulation oven according to claim 1, characterized in that heating pipes (5) are provided in the air outlet ducts on both sides of the box body (1).
The hot air circulation oven according to claim 1, characterized in that a humidity exhaust fan (7) is further provided at the top of the enclosure (1), and the air inlet of the humidity exhaust fan (7) and the oven The inner cavity of the body (1) is in communication.